No. I use them daily while working as a greenskeeper. Throughout heavy sweating and light rain showers I wore them during this past summer and lost functionality of the control buttons along the wire, but still operate to listen to music and phone calls by using controls on my iPhone. I would guess that pouring water over your head would be detrimental to the beatsx earbuds. The Powerbeats offer rated water resistance, I believe, and would be a better fit for your needs.

It will take roughly 45 minutes to an hour to have them fully charged and of course with Fast Fuel, 5 minutes of charging gets you more or less 2 hours of playback. Important to know, as it is not clearly mentioned in the documentation, while charging the light will be red and "breathing", once fully charged it will turn white.

I just tested pause/play (single click), skip forward a track (double click) and skip back a track (triple click) and they work great. Volume up and down also work (there are three buttons total, as on the EarPods or other Apple ear bugs). And you can press and hold volume down to quickly silence (or just click middle button once to pause, duh). You can also triple click and hold to rewind, but it does so in chunks of time (iTunes anyway) since there is wireless delay. (Double click and hold also works to fast forward.) Tested all of this with iTunes 12.5.5.5 and iPhone 6s (running iOS 10.2.1) with Apple Music app. (Controls seem to work on third party apps such as Overcast, a podcast player for iOS.)

Most bluetooth audio device will lag about 1 second at the beginning of a video. I find this problem in my Momentum in Ear Wireless headphone and Bose Touch Soundlink speaker, but I didn't notice it on beatsX! I think it owes to W1 chip.